morgan



. (No Model.)

D,.J. MORGAN.

WITNESSES K 1 m VVE VTOR Attorney N ETERS. Plwla hlhngnphur. Wasluuglun. DV :3.

DAVID J. MORGAN, OF CARDIFF,

STOPPE R FOR PATENT OFFICE.

COUNTY OF GLAMORGAN, WALES.

LEAKY TUBES.

SPECIFICATION forming part of Letters Patent No. 249,783, dated November 22, 1881.

Application filed September 3, 1880. (No model.) Patented in England July 20,1880.

To all whom it may concern;

Be it known that 1, DAVID JOHN MORGAN, of Cardiff, in the county of Glamorgan, in the Principality of Wales, haveinvented a new and leaky or damaged tubes from the smoke-box' or front end while under steam or other pressure, so as to leave the repaired tube as effective for heating purposes as an ordinary staytube.

The mechanism illustrated in the accompanying drawing, in which the figure is a vertical section, by means of which I effect this object is an inner tube, K, which is expanded at the smoke-box end and then inserted into the burst tube L. In this way the escaping rush of steam is immediatelydriven to the end opposite to that of the repairing operator. The inner tube, K, is now expanded at the farther end, 0, by attaching a tube-expander, A, to a pipe or tube, B, of sufiicieutlength and small enough to pass into the inner repairing-tube, K. The end of this tube nearest to the operator is screwed outside and fitted with fly-nut and check-nut O O, by means of which the expander may be secured into exact position. The mandrel or mandrel B may be rotated so as effectually to expand and make tight the fartherend of the tube. Theinnertube thus fixed is permanently secured and complete for work, and is at least as effective for heating purposes as the ordinary stay-tube, inasmuch as the combined thickness of the burst tube and inner tube do not exceed the thickness of the stay-tube.

N is a roller, which may be exchanged for a larger or smaller one, according to the size of the pipe placed upon the mandrel D; andM is a washer fitted on the said mandrel.

. What I claim as my invention, and desire to protect by Letters Patent, is-

The device for repairing burst tubes, effected by the combination of an inner thin tube, K, expanded at the farther end through the tube-by a roller-mandrel, A, fixed to a hollow tube, B, and with an added mandrel-rod, E, substant-ially as hereinbet'ore set forth and described.

DAVID JOHN MORGAN.

Witnesses v EDWARD D. PHILLIPS,

BENJAMIN D. JENKINS. 

